Jakub Sitnicki wrote:

Now that sockmap can hold listening sockets, when setting up the psock we
will (i) grab references to verdict/parser progs, and (2) override socket
upcalls sk_data_ready and sk_write_space.

We cannot redirect to listening sockets so we don't need to link the socket
to the BPF progs, but more importantly we don't want the listening socket
to have overridden upcalls because they would get inherited by child
sockets cloned from it.

Introduce a separate initialization path for listening sockets that does
not change the upcalls and ignores the BPF progs.

Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
---
 net/core/sock_map.c | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

Any reason only support for sock_map types are added? We can also support
sock_hash I presume? Could be a follow up patch I guess but if its not
too much trouble would be worth adding now vs trying to detect at run
time later. I think it should be as simple as using similar logic as
below in sock_hash_update_common

Thanks.